Previous analytical approximations for the far-field radiation patterns of a double-heterostructure laser have been restricted by TE-mode propagation in slab waveguides. A model that is applicable to both TE- and TM-mode propagation either in a slab waveguide or in a multiple-quantum-well structure is developed. Results of computations agree with the measured irradiance profiles of visible diode lasers of wavelengths from 635 to 670 nm. A process for deriving far-field expressions in terms of the diode-laser parameters listed in data books is suggested. Astigmatic aberration present in the wave front is determined, and the final result is expressed in a form convenient for diffraction analysis of truncated focused (or collimated) diode-laser beams.
© 1996 Optical Society of America
Original Manuscript: July 26, 1995
Published: March 20, 1996
Yajun Li and Joseph Katz, "Nonparaxial analysis of the far-field radiation patterns of double-heterostructure lasers," Appl. Opt. 35, 1442-1451 (1996)